Chemistry of the uranyl group—V: Some uranyl complexes with trimethylamine oxide

Abstract

Some uranyl complexes with several anionic bidentate ligands and trimethylamine oxide ( L) were prepared and characterized. The diethyldithiocarbamato (DTC) and the diethyldiselenocarbamato (DSC) derivatives have the general formula UO 2 X 2 L (where X = DTC or DSC). An acetato complex of formula [UO 2(OAc) 2· L.H 2O] 2 was also isolated. Furthermore by reaction of uranyl nitrate hexahydrate with the ligand L, two compounds were obtained of formula UO 2(NO 3) 2·2 L and UO 2(NO 3)) 2·4 L, respectively. As expected the first complex has an eight-coordinated configuration with the two nitrato-groups both chelate to the uranium atom; we suggested for the other complex a salt-like formulation from i.r. spectral evidences. In addition the preparation and the properties of UO 2(DSC) 2·(C 6H 5) 3PO and UO 2(DSC) 2·(C 6H 5)AsO are reported.